The Keyword

"father of a fool has no joy"

Proverbs 17:21
"21 He who begets a scoffer does so to his sorrow, And the father of a fool has no joy."   (Whole Chapter of NKJ Version)

"21 He who becomes the parent of a [self-confident] fool does it to his sorrow, and the father of [an empty-headed] fool has no joy [in him]."   (Whole Chapter of Amp Version)